Occult Meningocele of the Sacrum

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Abstract
The terms “occult meningocele” and “spina bifida occulta” have occasioned confusion in the past. Kaufmann implies that these are more or less synonymous. Adami, however, considers “meningocele” to be a cyst of the meninges, or a hernia, projecting through the walls of the vertebral canal, and “spina bifida occulta” to be a localized lack of junction of the laminae with no projecting fluid sac. In this paper the term “occult meningocele” is employed rather than the often used “spina bifida occulta.” It embraces a diffuse dilatation of the dural sac with or without the relatively inconsequential element of herniation into the soft tissues. The meningocele, rather than the bifid spinous process, is the significant element. In one of the three cases upon which this report is based there was no spina bifida. Mixter (1), in his section in Lewis' “Practice of Surgery,” gives an excellent description of this condition, using the term “spina bifida occulta.” He describes it as a congenital malformation consisting ...

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